body{
	background-image: url(images/a7.jpg);
	background-size:100% 100% ;
    background-attachment:fixed ;
    background-repeat: no-repeat;
}
.box{
	background-color: gray;
	margin: 10px auto;	
}
.nav1 ul li {
    float: left;
    text-align: center;
    width: 100px;
}
.nav1 {
    height: 55px;
    line-height: 40px;
    background-color: pink;
}

.nav1 ul {
    width: 1155px;
    margin-right: auto;
    margin-left: auto;
}

.nav1 ul li a {
    color: #FFF;
    display: block;
    font-size: 14px;
}

.nav1 ul li a:hover {
    background-color: #e92000;
}
.title{
	display: flex;
	margin: 0px auto;
	width: 500px;
	height: 200px;
	opacity: 0.5;
}
form{
	display: inline-block;
	margin: 20px;
}
img{
	width: 200px;
	height: 300px;
}